According to the WHO [21], emergency contraceptive methods offers women safe means of preventing unwanted pregnancies in event of unprotected sexual intercourse or contraceptive failure, and is a more accurate term than other synonyms. Hormonal methods of EC are mainly pills; estrogen only, combined estrogenprogesterone, progesterone only, Selective Progesterone Receptor Modulators (SPRM) such as Mifepristone (RU486) and Ulipristal Acetate (UPA). Non hormonal methods of EC include intrauterine contraceptive devices [22]. Other research drugs like anordrin, tamoxifen, danazol and misoprostol may offer no real advantage [23].
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